In this post I will explain how to show tooltip in dropdown
in asp.net using c#.
Description:-
In dropdown when the user name or something is too long ,so
that we cannot read or see it properly in dropdown we use tooltip to see the
full name. When cursor is on that item in dropdown it will show the full name
or path. It’s better to see the example.
First make a design page ,on this take one dropdownlist and
bind with table .
Default.aspx:-
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div align="center">
<asp:DropDownList ID="DropDownList1" runat="server"
ondatabound="DropDownList1_DataBound">
</asp:DropDownList>
</div>
</form>
</body>
</html>
Code behind page:-
using
System;
using
System.Collections.Generic;
using
System.Linq;
using
System.Web;
using
System.Web.UI;
using
System.Web.UI.WebControls;
using
System.Data;
using
System.Data.SqlClient;
public
partial class dropdown_ToolTipInDropDown : System.Web.UI.Page
{
protected void Page_Load(object
sender, EventArgs e)
{
if
(!IsPostBack)
{
BindDropDown();
}
}
public void BindDropDown()
{
SqlConnection con = new
SqlConnection(@"Data
Source=SUSHIL-PC;Initial Catalog=modi;Integrated Security=True");
SqlCommand
com = new SqlCommand("Select EmpId , EmpName From EmpDetails",con);
SqlDataAdapter
da = new SqlDataAdapter(com);
DataSet ds = new DataSet();
con.Open();
da.Fill(ds);
con.Close();
DropDownList1.DataTextField = "EmpName";
DropDownList1.DataValueField = "EmpId";
DropDownList1.DataSource = ds;
DropDownList1.DataBind();
}
protected void DropDownList1_DataBound(object
sender, EventArgs e)
{
DropDownList
ddl = sender as DropDownList;
if (ddl
!= null)
{
foreach
(ListItem li in
ddl.Items)
{
li.Attributes["title"]=li.Text;
}
}
}
}
Output :-
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